Test: Fix test name

[nik9000]

This test has the wrong name and hasn't been automatically running. This
fixes the name so we'll run it.

[elasticmachine]

Pinging @elastic/es-core-infra

[rjernst]

Why didn't the naming conventions check find this? Are we missing logic in there for ESRestTestCase?

[nik9000]

Why didn't the naming conventions check find this? Are we missing logic in there for ESRestTestCase?

I'll investigate that but I figured getting the test running is worthy of its own PR to get it in more quickly.

[jasontedor]

LGTM.

[nik9000]

Are we missing logic in there for ESRestTestCase?

We are indeed. Right now we have

    /**
     * Superclass for all tests.
     */
    @Input
    private String testClass = "org.apache.lucene.util.LuceneTestCase";
    /**
     * Superclass for all integration tests.
     */
    @Input
    private String integTestClass = "org.elasticsearch.test.ESIntegTestCase";

This is the right configuration for server, but not really for other places. If someone extends ESRestTestCase then it just counts as a regular test. For the most part it'll just fail when it runs during the tests phase. But if we disable the test phase and only have integTest enabled then we never run the rest test and we never know that it is wrong. I'll open an issue.